Given, mass of solid sphere =m Radius of solid sphere =a Side of square =b Let I‌net ‌ be the net moment of inertia of system. Moment of inertia of sphere, Is=‌
2
5
ma2 Axis of rotation is BC.
∴ Moment of inertia of any body at distance, (∵d=b) d‌‌=md2=mb2 ∴‌‌I‌net ‌‌‌=4(‌